why there is an error

Question

when I create a new file class in codebloke and ready to execute, there is an error shows "no such file or directory" & "no input files". what's wrong with that. (I just follow what sololearn said)?

Answer 1

Please David Yan post your code along with your question as it helps us the community see what you are referencing and how best to help you.
Please use the 8 rules for getting help from the community.
https://www.sololearn.com/Blog/38/8-simple-rules-to-get-help-from-the-community